Mucocele of the appendix with magnetic resonance imaging findings

Puvaneswary, M; Proietto, Anthony

doi:10.1111/j.1440-1673.2005.01530.x

Cited by 13 publications

(8 citation statements)

References 10 publications

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“…Visualization of the appendix revealing the diameter of the appendix exceeding 15 mm are considered to be a specific appendiceal mucocele index [20,21]. In CT, a well-capsulated cystic formation with calcificates in the wall is visualized [22,23]. Another indicator is the presence of appendiceal lumen exceeding 13 mm [24].…”

Section: Discussionmentioning

confidence: 99%

Analysis of Clinical Characteristics of Low-Grade Appendiceal Mucinous Neoplasm (LAMN): A Retrospective Cohort Study of 51 LAMN Patients

Xiao

Liu

2020

Journal of Investigative Surgery

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Introduction: Low-grade appendiceal mucinous neoplasm (LAMN) is a rare disorder. There is no consensus on the prognosis and management of LAMN. Materials and methods: We reviewed 51 consecutive patients with LAMN from 2013 to 2018. We divided our patients into two groups. The first is patients with an intact appendix. The second group comprises patients with the potential to develop a malignant condition. Comparisons of serum tumor markers between two groups were performed. Survival curves were estimated. Univariate and multivariate Cox proportional hazards were computed for 46 patients with median follow-up of 2.7 years. Results: Comparison of patients in two groups revealed significant differences in the mean level and abnormal ratio of CA125 (p < 0.001, p < 0.001), CA19-9 (p ¼ 0.04, p ¼ 0.04), and CEA (p ¼ 0.001, p ¼ 0.02). Eight patients had relapsed by the last follow-up in the second group. Patients with normal CEA had significantly longer disease-free survival (DFS) time than those with abnormal CEA (p ¼ 0.04). CA19-9 exhibited a significant association with DFS (HR ¼ 5.72, p ¼ 0.02) in the Univariate Cox proportional hazards. Discussion: The prognosis of LAMN is related to serum tumor markers, the surgical procedure and the pathology.

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Section: Discussionmentioning

confidence: 99%

Analysis of Clinical Characteristics of Low-Grade Appendiceal Mucinous Neoplasm (LAMN): A Retrospective Cohort Study of 51 LAMN Patients

Xiao

Liu

2020

Journal of Investigative Surgery

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“…On computed tomography the changes are well circumscribed with Hounsfield values close to that of water. On MRI the lesions are hyperintense on T2-weighted sequences and hypo- or isointense on T1-weighted sequences [15,16]. Some characteristics of imaging findings in AM with torsion have been reported.…”

Section: Discussionmentioning

confidence: 99%

Preoperative assessment and treatment of appendiceal mucocele complicated by acute torsion: a case report

2014

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BackgroundMucus-producing tumours of the appendix or mucoceles can, if left untreated, lead to dissemination of its contents into the peritoneal cavity causing substantial morbidity to the patient. Symptoms for complicated mucoceles can mimic those of acute appendicitis and the final diagnosis is most likely made intraoperatively. We here present a case that is, to our knowledge, one of only ten described in the literature and the first to characterize torsion of an appendiceal mucocele with abdominal magnetic resonance imaging.Case presentationThe patient, a 34-year-old Caucasian female presented at the emergency department with acute abdominal pain in the right lower quadrant. Initial diagnostic work-up including ultrasonography and abdominal magnetic resonance imaging showed a large tubular mass at the base of the appendix with indirect signs of torsion. A laparoscopic appendectomy was performed the following day where the finding was confirmed. The patient went on to have an uneventful recovery and was discharged from the hospital on the first postoperative day.ConclusionsMagnetic resonance imaging is a useful tool in identifying unknown lesions of the appendix and should be considered the primary imaging modality in especially younger patients requiring diagnostic imaging. In this case the preoperative imaging findings aided in choosing the correct timing and treatment option for the patient.

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“…[12] Thus, if the reporting radiologist does not consider the possibility of an appendiceal mucinous neoplasm as a mimic for gynecological disease, the abnormality may be undermanaged, leading to long-term surveillance or no routine imaging follow-up at all.…”

Section: Discussionmentioning

confidence: 99%

Mucinous Neoplasm of the Appendix as a Mimic of Cystic Adnexal Pathology

Hutchinson

Lyske

Patel

et al. 2018

Journal of Clinical Imaging Science

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Pelvic pain presents a common diagnostic conundrum with a myriad of causes ranging from benign and trivial to malignant and emergent. We present a case where a mucinous neoplasm of the appendix acted as a mimic for tubular adnexal pathology on imaging. With the associated imaging findings on ultrasound, computed tomography, and magnetic resonance imaging, we wish to raise awareness of mucinous tumors of the appendix when tubular right adnexal pathology is present both in the presence of pelvic or abdominal pain or when noted incidentally. Tubular pathology such as uncomplicated paraovarian cysts or hydrosalpinx is frequently treated conservatively with long-interval follow-up imaging or left to clinical follow-up. Thus, if incorrectly diagnosed as tubular pathology, an appendix mucocele or mucinous neoplasm of the appendix is likely to be undertreated. We wish to clarify some of the confusion around nomenclature and classification of the multiple entities that are comprised by the terms mucocele and mucinous tumor of the appendix.

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Mucocele of the appendix with magnetic resonance imaging findings

Abstract: Mucocele of the appendix is a rare lesion caused by abnormal accumulation of mucus. Although preoperative diagnosis is important to avoid rupture of a mucocele, the diagnosis is often made at surgery. We report a case of an appendiceal mucocele that mimicked a hydrosalpinx on CT and MRI.

Cited by 13 publications

References 10 publications

Analysis of Clinical Characteristics of Low-Grade Appendiceal Mucinous Neoplasm (LAMN): A Retrospective Cohort Study of 51 LAMN Patients

Analysis of Clinical Characteristics of Low-Grade Appendiceal Mucinous Neoplasm (LAMN): A Retrospective Cohort Study of 51 LAMN Patients

Preoperative assessment and treatment of appendiceal mucocele complicated by acute torsion: a case report

Mucinous Neoplasm of the Appendix as a Mimic of Cystic Adnexal Pathology

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